单元知识检测
教材回扣
Ⅰ.课文缩写填空
答案:1.substances 2.reaction 3.heated 4.to form 5.rusts 6.preparations 7.equipment 8.to make 9.to 10.conclusion
Different metals have different uses.When we use metals,it is important to know how they react with different 1. (substance).The 2. (react) of metals with these substances can be put in order.From the table we can find that sodium reacts both with oxygen and water while copper doesn’t react with water.When 3. (heat) in oxygen,calcium burns 4. (form ...


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